| /* |
| * Copyright (c) 2002-2003 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of |
| * the algorithm used |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * huffyuv encoder |
| */ |
| |
| #include "avcodec.h" |
| #include "huffyuv.h" |
| #include "huffman.h" |
| #include "internal.h" |
| #include "put_bits.h" |
| |
| static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst, |
| const uint8_t *src, int w, int left) |
| { |
| int i; |
| if (w < 32) { |
| for (i = 0; i < w; i++) { |
| const int temp = src[i]; |
| dst[i] = temp - left; |
| left = temp; |
| } |
| return left; |
| } else { |
| for (i = 0; i < 16; i++) { |
| const int temp = src[i]; |
| dst[i] = temp - left; |
| left = temp; |
| } |
| s->dsp.diff_bytes(dst + 16, src + 16, src + 15, w - 16); |
| return src[w-1]; |
| } |
| } |
| |
| static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst, |
| const uint8_t *src, int w, |
| int *red, int *green, int *blue, int *alpha) |
| { |
| int i; |
| int r,g,b,a; |
| r = *red; |
| g = *green; |
| b = *blue; |
| a = *alpha; |
| for (i = 0; i < FFMIN(w, 4); i++) { |
| const int rt = src[i * 4 + R]; |
| const int gt = src[i * 4 + G]; |
| const int bt = src[i * 4 + B]; |
| const int at = src[i * 4 + A]; |
| dst[i * 4 + R] = rt - r; |
| dst[i * 4 + G] = gt - g; |
| dst[i * 4 + B] = bt - b; |
| dst[i * 4 + A] = at - a; |
| r = rt; |
| g = gt; |
| b = bt; |
| a = at; |
| } |
| |
| s->dsp.diff_bytes(dst + 16, src + 16, src + 12, w * 4 - 16); |
| |
| *red = src[(w - 1) * 4 + R]; |
| *green = src[(w - 1) * 4 + G]; |
| *blue = src[(w - 1) * 4 + B]; |
| *alpha = src[(w - 1) * 4 + A]; |
| } |
| |
| static inline void sub_left_prediction_rgb24(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int *red, int *green, int *blue){ |
| int i; |
| int r,g,b; |
| r = *red; |
| g = *green; |
| b = *blue; |
| for (i = 0; i < FFMIN(w,16); i++) { |
| const int rt = src[i*3 + 0]; |
| const int gt = src[i*3 + 1]; |
| const int bt = src[i*3 + 2]; |
| dst[i*3 + 0] = rt - r; |
| dst[i*3 + 1] = gt - g; |
| dst[i*3 + 2] = bt - b; |
| r = rt; |
| g = gt; |
| b = bt; |
| } |
| |
| s->dsp.diff_bytes(dst + 48, src + 48, src + 48 - 3, w*3 - 48); |
| |
| *red = src[(w - 1)*3 + 0]; |
| *green = src[(w - 1)*3 + 1]; |
| *blue = src[(w - 1)*3 + 2]; |
| } |
| |
| static int store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf) |
| { |
| int i; |
| int index = 0; |
| |
| for (i = 0; i < 256;) { |
| int val = len[i]; |
| int repeat = 0; |
| |
| for (; i < 256 && len[i] == val && repeat < 255; i++) |
| repeat++; |
| |
| av_assert0(val < 32 && val >0 && repeat<256 && repeat>0); |
| if (repeat > 7) { |
| buf[index++] = val; |
| buf[index++] = repeat; |
| } else { |
| buf[index++] = val | (repeat << 5); |
| } |
| } |
| |
| return index; |
| } |
| |
| static av_cold int encode_init(AVCodecContext *avctx) |
| { |
| HYuvContext *s = avctx->priv_data; |
| int i, j; |
| |
| ff_huffyuv_common_init(avctx); |
| |
| avctx->extradata = av_mallocz(1024*30); // 256*3+4 == 772 |
| avctx->stats_out = av_mallocz(1024*30); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132 |
| if (!avctx->extradata || !avctx->stats_out) { |
| av_freep(&avctx->stats_out); |
| return AVERROR(ENOMEM); |
| } |
| s->version = 2; |
| |
| avctx->coded_frame = &s->picture; |
| |
| switch (avctx->pix_fmt) { |
| case AV_PIX_FMT_YUV420P: |
| case AV_PIX_FMT_YUV422P: |
| if (s->width & 1) { |
| av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n"); |
| return AVERROR(EINVAL); |
| } |
| s->bitstream_bpp = avctx->pix_fmt == AV_PIX_FMT_YUV420P ? 12 : 16; |
| break; |
| case AV_PIX_FMT_RGB32: |
| s->bitstream_bpp = 32; |
| break; |
| case AV_PIX_FMT_RGB24: |
| s->bitstream_bpp = 24; |
| break; |
| default: |
| av_log(avctx, AV_LOG_ERROR, "format not supported\n"); |
| return AVERROR(EINVAL); |
| } |
| avctx->bits_per_coded_sample = s->bitstream_bpp; |
| s->decorrelate = s->bitstream_bpp >= 24; |
| s->predictor = avctx->prediction_method; |
| s->interlaced = avctx->flags&CODEC_FLAG_INTERLACED_ME ? 1 : 0; |
| if (avctx->context_model == 1) { |
| s->context = avctx->context_model; |
| if (s->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) { |
| av_log(avctx, AV_LOG_ERROR, |
| "context=1 is not compatible with " |
| "2 pass huffyuv encoding\n"); |
| return AVERROR(EINVAL); |
| } |
| }else s->context= 0; |
| |
| if (avctx->codec->id == AV_CODEC_ID_HUFFYUV) { |
| if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Error: YV12 is not supported by huffyuv; use " |
| "vcodec=ffvhuff or format=422p\n"); |
| return AVERROR(EINVAL); |
| } |
| if (avctx->context_model) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Error: per-frame huffman tables are not supported " |
| "by huffyuv; use vcodec=ffvhuff\n"); |
| return AVERROR(EINVAL); |
| } |
| if (s->interlaced != ( s->height > 288 )) |
| av_log(avctx, AV_LOG_INFO, |
| "using huffyuv 2.2.0 or newer interlacing flag\n"); |
| } |
| |
| if (s->bitstream_bpp >= 24 && s->predictor == MEDIAN) { |
| av_log(avctx, AV_LOG_ERROR, |
| "Error: RGB is incompatible with median predictor\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| ((uint8_t*)avctx->extradata)[0] = s->predictor | (s->decorrelate << 6); |
| ((uint8_t*)avctx->extradata)[1] = s->bitstream_bpp; |
| ((uint8_t*)avctx->extradata)[2] = s->interlaced ? 0x10 : 0x20; |
| if (s->context) |
| ((uint8_t*)avctx->extradata)[2] |= 0x40; |
| ((uint8_t*)avctx->extradata)[3] = 0; |
| s->avctx->extradata_size = 4; |
| |
| if (avctx->stats_in) { |
| char *p = avctx->stats_in; |
| |
| for (i = 0; i < 3; i++) |
| for (j = 0; j < 256; j++) |
| s->stats[i][j] = 1; |
| |
| for (;;) { |
| for (i = 0; i < 3; i++) { |
| char *next; |
| |
| for (j = 0; j < 256; j++) { |
| s->stats[i][j] += strtol(p, &next, 0); |
| if (next == p) return -1; |
| p = next; |
| } |
| } |
| if (p[0] == 0 || p[1] == 0 || p[2] == 0) break; |
| } |
| } else { |
| for (i = 0; i < 3; i++) |
| for (j = 0; j < 256; j++) { |
| int d = FFMIN(j, 256 - j); |
| |
| s->stats[i][j] = 100000000 / (d + 1); |
| } |
| } |
| |
| for (i = 0; i < 3; i++) { |
| ff_huff_gen_len_table(s->len[i], s->stats[i]); |
| |
| if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) { |
| return -1; |
| } |
| |
| s->avctx->extradata_size += |
| store_table(s, s->len[i], &((uint8_t*)s->avctx->extradata)[s->avctx->extradata_size]); |
| } |
| |
| if (s->context) { |
| for (i = 0; i < 3; i++) { |
| int pels = s->width * s->height / (i ? 40 : 10); |
| for (j = 0; j < 256; j++) { |
| int d = FFMIN(j, 256 - j); |
| s->stats[i][j] = pels/(d + 1); |
| } |
| } |
| } else { |
| for (i = 0; i < 3; i++) |
| for (j = 0; j < 256; j++) |
| s->stats[i][j]= 0; |
| } |
| |
| if (ff_huffyuv_alloc_temp(s)) { |
| ff_huffyuv_common_end(s); |
| return AVERROR(ENOMEM); |
| } |
| |
| s->picture_number=0; |
| |
| return 0; |
| } |
| static int encode_422_bitstream(HYuvContext *s, int offset, int count) |
| { |
| int i; |
| const uint8_t *y = s->temp[0] + offset; |
| const uint8_t *u = s->temp[1] + offset / 2; |
| const uint8_t *v = s->temp[2] + offset / 2; |
| |
| if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 2 * 4 * count) { |
| av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
| return -1; |
| } |
| |
| #define LOAD4\ |
| int y0 = y[2 * i];\ |
| int y1 = y[2 * i + 1];\ |
| int u0 = u[i];\ |
| int v0 = v[i]; |
| |
| count /= 2; |
| |
| if (s->flags & CODEC_FLAG_PASS1) { |
| for(i = 0; i < count; i++) { |
| LOAD4; |
| s->stats[0][y0]++; |
| s->stats[1][u0]++; |
| s->stats[0][y1]++; |
| s->stats[2][v0]++; |
| } |
| } |
| if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT) |
| return 0; |
| if (s->context) { |
| for (i = 0; i < count; i++) { |
| LOAD4; |
| s->stats[0][y0]++; |
| put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]); |
| s->stats[1][u0]++; |
| put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]); |
| s->stats[0][y1]++; |
| put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]); |
| s->stats[2][v0]++; |
| put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]); |
| } |
| } else { |
| for(i = 0; i < count; i++) { |
| LOAD4; |
| put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]); |
| put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]); |
| put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]); |
| put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]); |
| } |
| } |
| return 0; |
| } |
| |
| static int encode_gray_bitstream(HYuvContext *s, int count) |
| { |
| int i; |
| |
| if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 4 * count) { |
| av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
| return -1; |
| } |
| |
| #define LOAD2\ |
| int y0 = s->temp[0][2 * i];\ |
| int y1 = s->temp[0][2 * i + 1]; |
| #define STAT2\ |
| s->stats[0][y0]++;\ |
| s->stats[0][y1]++; |
| #define WRITE2\ |
| put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);\ |
| put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]); |
| |
| count /= 2; |
| |
| if (s->flags & CODEC_FLAG_PASS1) { |
| for (i = 0; i < count; i++) { |
| LOAD2; |
| STAT2; |
| } |
| } |
| if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT) |
| return 0; |
| |
| if (s->context) { |
| for (i = 0; i < count; i++) { |
| LOAD2; |
| STAT2; |
| WRITE2; |
| } |
| } else { |
| for (i = 0; i < count; i++) { |
| LOAD2; |
| WRITE2; |
| } |
| } |
| return 0; |
| } |
| |
| static inline int encode_bgra_bitstream(HYuvContext *s, int count, int planes) |
| { |
| int i; |
| |
| if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 4*planes*count) { |
| av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); |
| return -1; |
| } |
| |
| #define LOAD3\ |
| int g = s->temp[0][planes==3 ? 3*i + 1 : 4*i + G];\ |
| int b = (s->temp[0][planes==3 ? 3*i + 2 : 4*i + B] - g) & 0xff;\ |
| int r = (s->temp[0][planes==3 ? 3*i + 0 : 4*i + R] - g) & 0xff;\ |
| int a = s->temp[0][planes*i + A]; |
| #define STAT3\ |
| s->stats[0][b]++;\ |
| s->stats[1][g]++;\ |
| s->stats[2][r]++;\ |
| if(planes==4) s->stats[2][a]++; |
| #define WRITE3\ |
| put_bits(&s->pb, s->len[1][g], s->bits[1][g]);\ |
| put_bits(&s->pb, s->len[0][b], s->bits[0][b]);\ |
| put_bits(&s->pb, s->len[2][r], s->bits[2][r]);\ |
| if(planes==4) put_bits(&s->pb, s->len[2][a], s->bits[2][a]); |
| |
| if ((s->flags & CODEC_FLAG_PASS1) && |
| (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) { |
| for (i = 0; i < count; i++) { |
| LOAD3; |
| STAT3; |
| } |
| } else if (s->context || (s->flags & CODEC_FLAG_PASS1)) { |
| for (i = 0; i < count; i++) { |
| LOAD3; |
| STAT3; |
| WRITE3; |
| } |
| } else { |
| for (i = 0; i < count; i++) { |
| LOAD3; |
| WRITE3; |
| } |
| } |
| return 0; |
| } |
| |
| static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| const AVFrame *pict, int *got_packet) |
| { |
| HYuvContext *s = avctx->priv_data; |
| const int width = s->width; |
| const int width2 = s->width>>1; |
| const int height = s->height; |
| const int fake_ystride = s->interlaced ? pict->linesize[0]*2 : pict->linesize[0]; |
| const int fake_ustride = s->interlaced ? pict->linesize[1]*2 : pict->linesize[1]; |
| const int fake_vstride = s->interlaced ? pict->linesize[2]*2 : pict->linesize[2]; |
| AVFrame * const p = &s->picture; |
| int i, j, size = 0, ret; |
| |
| if ((ret = ff_alloc_packet2(avctx, pkt, width * height * 3 * 4 + FF_MIN_BUFFER_SIZE)) < 0) |
| return ret; |
| |
| *p = *pict; |
| p->pict_type = AV_PICTURE_TYPE_I; |
| p->key_frame = 1; |
| |
| if (s->context) { |
| for (i = 0; i < 3; i++) { |
| ff_huff_gen_len_table(s->len[i], s->stats[i]); |
| if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i]) < 0) |
| return -1; |
| size += store_table(s, s->len[i], &pkt->data[size]); |
| } |
| |
| for (i = 0; i < 3; i++) |
| for (j = 0; j < 256; j++) |
| s->stats[i][j] >>= 1; |
| } |
| |
| init_put_bits(&s->pb, pkt->data + size, pkt->size - size); |
| |
| if (avctx->pix_fmt == AV_PIX_FMT_YUV422P || |
| avctx->pix_fmt == AV_PIX_FMT_YUV420P) { |
| int lefty, leftu, leftv, y, cy; |
| |
| put_bits(&s->pb, 8, leftv = p->data[2][0]); |
| put_bits(&s->pb, 8, lefty = p->data[0][1]); |
| put_bits(&s->pb, 8, leftu = p->data[1][0]); |
| put_bits(&s->pb, 8, p->data[0][0]); |
| |
| lefty = sub_left_prediction(s, s->temp[0], p->data[0], width , 0); |
| leftu = sub_left_prediction(s, s->temp[1], p->data[1], width2, 0); |
| leftv = sub_left_prediction(s, s->temp[2], p->data[2], width2, 0); |
| |
| encode_422_bitstream(s, 2, width-2); |
| |
| if (s->predictor==MEDIAN) { |
| int lefttopy, lefttopu, lefttopv; |
| cy = y = 1; |
| if (s->interlaced) { |
| lefty = sub_left_prediction(s, s->temp[0], p->data[0] + p->linesize[0], width , lefty); |
| leftu = sub_left_prediction(s, s->temp[1], p->data[1] + p->linesize[1], width2, leftu); |
| leftv = sub_left_prediction(s, s->temp[2], p->data[2] + p->linesize[2], width2, leftv); |
| |
| encode_422_bitstream(s, 0, width); |
| y++; cy++; |
| } |
| |
| lefty = sub_left_prediction(s, s->temp[0], p->data[0] + fake_ystride, 4, lefty); |
| leftu = sub_left_prediction(s, s->temp[1], p->data[1] + fake_ustride, 2, leftu); |
| leftv = sub_left_prediction(s, s->temp[2], p->data[2] + fake_vstride, 2, leftv); |
| |
| encode_422_bitstream(s, 0, 4); |
| |
| lefttopy = p->data[0][3]; |
| lefttopu = p->data[1][1]; |
| lefttopv = p->data[2][1]; |
| s->dsp.sub_hfyu_median_prediction(s->temp[0], p->data[0]+4, p->data[0] + fake_ystride + 4, width - 4 , &lefty, &lefttopy); |
| s->dsp.sub_hfyu_median_prediction(s->temp[1], p->data[1]+2, p->data[1] + fake_ustride + 2, width2 - 2, &leftu, &lefttopu); |
| s->dsp.sub_hfyu_median_prediction(s->temp[2], p->data[2]+2, p->data[2] + fake_vstride + 2, width2 - 2, &leftv, &lefttopv); |
| encode_422_bitstream(s, 0, width - 4); |
| y++; cy++; |
| |
| for (; y < height; y++,cy++) { |
| uint8_t *ydst, *udst, *vdst; |
| |
| if (s->bitstream_bpp == 12) { |
| while (2 * cy > y) { |
| ydst = p->data[0] + p->linesize[0] * y; |
| s->dsp.sub_hfyu_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy); |
| encode_gray_bitstream(s, width); |
| y++; |
| } |
| if (y >= height) break; |
| } |
| ydst = p->data[0] + p->linesize[0] * y; |
| udst = p->data[1] + p->linesize[1] * cy; |
| vdst = p->data[2] + p->linesize[2] * cy; |
| |
| s->dsp.sub_hfyu_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy); |
| s->dsp.sub_hfyu_median_prediction(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu); |
| s->dsp.sub_hfyu_median_prediction(s->temp[2], vdst - fake_vstride, vdst, width2, &leftv, &lefttopv); |
| |
| encode_422_bitstream(s, 0, width); |
| } |
| } else { |
| for (cy = y = 1; y < height; y++, cy++) { |
| uint8_t *ydst, *udst, *vdst; |
| |
| /* encode a luma only line & y++ */ |
| if (s->bitstream_bpp == 12) { |
| ydst = p->data[0] + p->linesize[0] * y; |
| |
| if (s->predictor == PLANE && s->interlaced < y) { |
| s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width); |
| |
| lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty); |
| } else { |
| lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty); |
| } |
| encode_gray_bitstream(s, width); |
| y++; |
| if (y >= height) break; |
| } |
| |
| ydst = p->data[0] + p->linesize[0] * y; |
| udst = p->data[1] + p->linesize[1] * cy; |
| vdst = p->data[2] + p->linesize[2] * cy; |
| |
| if (s->predictor == PLANE && s->interlaced < cy) { |
| s->dsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width); |
| s->dsp.diff_bytes(s->temp[2], udst, udst - fake_ustride, width2); |
| s->dsp.diff_bytes(s->temp[2] + width2, vdst, vdst - fake_vstride, width2); |
| |
| lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty); |
| leftu = sub_left_prediction(s, s->temp[1], s->temp[2], width2, leftu); |
| leftv = sub_left_prediction(s, s->temp[2], s->temp[2] + width2, width2, leftv); |
| } else { |
| lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty); |
| leftu = sub_left_prediction(s, s->temp[1], udst, width2, leftu); |
| leftv = sub_left_prediction(s, s->temp[2], vdst, width2, leftv); |
| } |
| |
| encode_422_bitstream(s, 0, width); |
| } |
| } |
| } else if(avctx->pix_fmt == AV_PIX_FMT_RGB32) { |
| uint8_t *data = p->data[0] + (height - 1) * p->linesize[0]; |
| const int stride = -p->linesize[0]; |
| const int fake_stride = -fake_ystride; |
| int y; |
| int leftr, leftg, leftb, lefta; |
| |
| put_bits(&s->pb, 8, lefta = data[A]); |
| put_bits(&s->pb, 8, leftr = data[R]); |
| put_bits(&s->pb, 8, leftg = data[G]); |
| put_bits(&s->pb, 8, leftb = data[B]); |
| |
| sub_left_prediction_bgr32(s, s->temp[0], data + 4, width - 1, &leftr, &leftg, &leftb, &lefta); |
| encode_bgra_bitstream(s, width - 1, 4); |
| |
| for (y = 1; y < s->height; y++) { |
| uint8_t *dst = data + y*stride; |
| if (s->predictor == PLANE && s->interlaced < y) { |
| s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width * 4); |
| sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb, &lefta); |
| } else { |
| sub_left_prediction_bgr32(s, s->temp[0], dst, width, &leftr, &leftg, &leftb, &lefta); |
| } |
| encode_bgra_bitstream(s, width, 4); |
| } |
| }else if(avctx->pix_fmt == AV_PIX_FMT_RGB24){ |
| uint8_t *data = p->data[0] + (height-1)*p->linesize[0]; |
| const int stride = -p->linesize[0]; |
| const int fake_stride = -fake_ystride; |
| int y; |
| int leftr, leftg, leftb; |
| |
| put_bits(&s->pb, 8, leftr= data[0]); |
| put_bits(&s->pb, 8, leftg= data[1]); |
| put_bits(&s->pb, 8, leftb= data[2]); |
| put_bits(&s->pb, 8, 0); |
| |
| sub_left_prediction_rgb24(s, s->temp[0], data+3, width-1, &leftr, &leftg, &leftb); |
| encode_bgra_bitstream(s, width-1, 3); |
| |
| for(y=1; y<s->height; y++){ |
| uint8_t *dst = data + y*stride; |
| if(s->predictor == PLANE && s->interlaced < y){ |
| s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width*3); |
| sub_left_prediction_rgb24(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb); |
| }else{ |
| sub_left_prediction_rgb24(s, s->temp[0], dst, width, &leftr, &leftg, &leftb); |
| } |
| encode_bgra_bitstream(s, width, 3); |
| } |
| } else { |
| av_log(avctx, AV_LOG_ERROR, "Format not supported!\n"); |
| } |
| emms_c(); |
| |
| size += (put_bits_count(&s->pb) + 31) / 8; |
| put_bits(&s->pb, 16, 0); |
| put_bits(&s->pb, 15, 0); |
| size /= 4; |
| |
| if ((s->flags&CODEC_FLAG_PASS1) && (s->picture_number & 31) == 0) { |
| int j; |
| char *p = avctx->stats_out; |
| char *end = p + 1024*30; |
| for (i = 0; i < 3; i++) { |
| for (j = 0; j < 256; j++) { |
| snprintf(p, end-p, "%"PRIu64" ", s->stats[i][j]); |
| p += strlen(p); |
| s->stats[i][j]= 0; |
| } |
| snprintf(p, end-p, "\n"); |
| p++; |
| } |
| } else |
| avctx->stats_out[0] = '\0'; |
| if (!(s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) { |
| flush_put_bits(&s->pb); |
| s->dsp.bswap_buf((uint32_t*)pkt->data, (uint32_t*)pkt->data, size); |
| } |
| |
| s->picture_number++; |
| |
| pkt->size = size * 4; |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| *got_packet = 1; |
| |
| return 0; |
| } |
| |
| static av_cold int encode_end(AVCodecContext *avctx) |
| { |
| HYuvContext *s = avctx->priv_data; |
| |
| ff_huffyuv_common_end(s); |
| |
| av_freep(&avctx->extradata); |
| av_freep(&avctx->stats_out); |
| |
| return 0; |
| } |
| |
| #if CONFIG_HUFFYUV_ENCODER |
| AVCodec ff_huffyuv_encoder = { |
| .name = "huffyuv", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_HUFFYUV, |
| .priv_data_size = sizeof(HYuvContext), |
| .init = encode_init, |
| .encode2 = encode_frame, |
| .close = encode_end, |
| .pix_fmts = (const enum AVPixelFormat[]){ |
| AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE |
| }, |
| .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"), |
| }; |
| #endif |
| |
| #if CONFIG_FFVHUFF_ENCODER |
| AVCodec ff_ffvhuff_encoder = { |
| .name = "ffvhuff", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_FFVHUFF, |
| .priv_data_size = sizeof(HYuvContext), |
| .init = encode_init, |
| .encode2 = encode_frame, |
| .close = encode_end, |
| .pix_fmts = (const enum AVPixelFormat[]){ |
| AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE |
| }, |
| .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"), |
| }; |
| #endif |